chore(deps): update dependency react-i18next to v16

Author: renovate[bot]

package-lock.json

@@ -76,7 +76,7 @@
     "lint-staged": "^15.2.2",
     "postcss": "^8.4.35",
     "prettier": "^3.2.5",
-    "react-i18next": "^15.0.0",
+    "react-i18next": "^16.0.0",
     "react-markdown": "^10.0.0",
     "remark-gfm": "^4.0.0",
     "sass": "^1.71.1",